<style>
article :first-of-type {
background-color:pink;
}
</style>
<article>
<div>This `div is first!</div>
<div>This <span>nested `span` is first</span>!</div>
<div>This <em> nested `em` is first</em>, but this <em>nested `em` is last</em>!</div>
<div>This <span>nested `span` gets styled</span>!</div>
<b>This `b` qualifies!</b>
<div>This is the final `div`.</div>
</article>
